Drones disabled near airports
Many drones, such as those from DJI, are now being designed not to work when near major airports. For example, here's an extract from the DJI Inspire quadcopter manual:
"Category A Safety Zone
(1) The category A “safety zone” is comprised of a small “no-fly zone” and a range of “restricted- altitude zones”. Flight is prevented in the “no-fly zone” but can continue with height restrictions in the restricted-altitude zone.
(2) 1.5 miles (2.4 km) around a designated safety zone is a no-fly zone, inside which takeoff is prevented.
(3) 1.5 miles (2.4 km) to 5 miles (8 km) around restricted areas are altitude restricted, with maximum
altitude going from 35 feet (10.5 m) at 1.5 miles (2.4 km) to 400 feet (120 m) at 5 miles (8 km).
(4) A “warning zone” has been set around the safety zone. When you fly within 320 feet (100m) of the
safety zone, a warning message will appear on the DJI Pilot App."